DEVELOPMENT OF A GENERAL EQUATION FOR ESTIMATION OF TRACTIVE EFFICIENCY BY DIMENSIONAL ANALYSIS

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FAKHRAEI O.; KARPARVARFARD S.H.

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Paper Information

Journal: IRANIAN JOURNAL OF AGRICULTURAL SCIENCES (JOURNAL OF AGRICULTURE) Year:2007 | Volume:38 | Issue:3 Page(s): 447-457

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Title

DEVELOPMENT OF A GENERAL EQUATION FOR ESTIMATION OF TRACTIVE EFFICIENCY BY DIMENSIONAL ANALYSIS

Author(s)

FAKHRAEI O. | KARPARVARFARD S.H. | Issue Writer Certificate

Keywords

TRACTORQ3

TRACTIVE EFFICIENCYQ2

DIMENSIONAL ANALYSISQ3

MOLDBOARD PLOWQ3

Abstract

Drawbar power produced by TRACTOR has gained and is gaining ever increasing importance. TRACTIVE EFFICIENCY is a measure of traction performance of the TRACTOR and is widely used for evaluating TRACTOR operation in the field. This study was conducted to develop a general equation for estimating the TRACTIVE EFFICIENCY of a TRACTOR by using DIMENSIONAL ANALYSIS technique. Therefore a single MOLDBOARD PLOW mounted on a U-445 TRACTOR was put into operation for the test on a loamyclay soil. Drawbar force, rolling resistance force of the drive wheels, slippage of the drive wheel, cone index of soil, theoretical and actual velocity and dynamic load on driving wheels were either measured or calculated. The experiment was performed at four plowing depths (10, 15, 20 and 25 cm) in three replications. Finally the general equation for an estimation of TRACTIVE EFFICIENCY was obtained as:T.E. =(10)2.830[(P/W)(0496) x (CI.b.d/W)(-0.280) x (10)(-0.720)(S)(10)(-4.41)(r/d)´x (10)(9.965)(T.F/W)] 1.0076 This equation can be employed to estimate tractate efficiency of various combinations of TRACTORs and MOLDBOARD PLOWs provided the dimensionless terms fall within the limits experienced in this research. By use of this equation and through employing the initial data for TRACTOR and soil, the TRACTIVE EFFICIENCY could well be predicted.

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References

EVALUATION AND COMPARISON OF TRACTIVE EFFICIENCIES OF MF285 AND U650 TRACTORS DURING MOLDBOARD PLOWING

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APA: Copy

FAKHRAEI, O., & KARPARVARFARD, S.H.. (2007). DEVELOPMENT OF A GENERAL EQUATION FOR ESTIMATION OF TRACTIVE EFFICIENCY BY DIMENSIONAL ANALYSIS. IRANIAN JOURNAL OF AGRICULTURAL SCIENCES (JOURNAL OF AGRICULTURE), 38(3), 447-457. SID. https://sid.ir/paper/8650/en

Vancouver: Copy

FAKHRAEI O., KARPARVARFARD S.H.. DEVELOPMENT OF A GENERAL EQUATION FOR ESTIMATION OF TRACTIVE EFFICIENCY BY DIMENSIONAL ANALYSIS. IRANIAN JOURNAL OF AGRICULTURAL SCIENCES (JOURNAL OF AGRICULTURE)[Internet]. 2007;38(3):447-457. Available from: https://sid.ir/paper/8650/en

IEEE: Copy

O. FAKHRAEI, and S.H. KARPARVARFARD, “DEVELOPMENT OF A GENERAL EQUATION FOR ESTIMATION OF TRACTIVE EFFICIENCY BY DIMENSIONAL ANALYSIS,” IRANIAN JOURNAL OF AGRICULTURAL SCIENCES (JOURNAL OF AGRICULTURE), vol. 38, no. 3, pp. 447–457, 2007, [Online]. Available: https://sid.ir/paper/8650/en

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